Oxides and Oxoanions

Q. 1) - In the following pair of halogen compound, which would undergo $S_{N}2$ reaction faster?


2) - In the following pair of halogen compound, which would undergo $S_{N}2$ reaction faster?

Q. The oxidation number of oxygen in $O_{2}Pt{F}_6$ is

1. $\text{zero}$
2. $+1/2$
3. $+1$
4. $-1/2$

Q. Permanganate ion reacts with bromide ion in basic medium to give manganese dioxide and bromate ion. Write the balanced ionic equation for the reaction.

Q.

Why are metal reducing agents and nonmetals oxidising agents?

Q. Write the net ionic equation for the reaction of potassium dichromate$\left(VI\right),K_{2}C{r}_2{O}_7$ with sodium sulphite, $N{a}_{2}S{O}_3,$ in an acid solution to give chromium $\left(III\right)$ ion and sulphate ion.

Q. How Does basic character of the oxides down the group in alkali metals change . Give reason

Q.

Which one of the following is not applicable to the phenomenon of adsorption?

1. $△G<0$
2. $△S<0$
3. $△H<0$
4. $△H>0$

Q.

What is green vitriol?

Q. $Cr{O}_3$ is a/an:

1. Acidic oxide
2. Basic oxide
3. Neutral oxide
4. Amphoteric oxide

Q. Please tell me how to find whether the given oxide is acidic or basic?

Q.

Chemical formula for calcium pyrophosphate is $C{a}_2{P}_2{O}_7$ The formula for ferric pyrophosphate will be

1. 

2. 

3. 

4. 

Q.

In an octahedral complex of ${\mathrm{Fe}}^{+2}$in a high spin state, what is the magnetic moment (spin only)?

1. $4.89\mathrm{BM}$

2. $1.73\mathrm{BM}$

3. $0\mathrm{BM}$

4. $3.87\mathrm{BM}$

Q.

Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.

Q.

Name the iron-containing pigment in erythrocytes.

Q. Which of the following statement is wrong:- a) F2 is the strongest oxidising agent as its reduction potential is highest b) Li is the weakest reducing agent as its reduction potential is low c) Li is the strongest reducing agent as its reduction potential is low d) F- ion does not show reducing property when react with metal ion Can the last point be explained

Q.

Mention any 2 roles of iron in cells.

Q.

Which property of mercury makes it suitable to be used in clinical thermometers.

Q.

Liquid ________ is filled with the bulb of a clinical thermometer.

Q.

Name the noble gases found in traces in the atmosphere.

Q.

A mercury thermometer makes use of the property of expansion of liquids on heating.

1. True
2. False

Q.

Give the name of the types of ceramics

Q.

Elements with more non-metallic character are good oxidizing agents and those with more electropositive character are good reducing agents.Explain.

Q.

Which of the following is the strongest oxidizing agent?

1. F

2. Br

3. Cl

4. I

Q.

Chemically magnetite is $F{e}_2{O}_3$

1. True
2. False

Q. Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.

Q.

Name salts which give brown color or accelerate with Nesslers reagent.

Q. $Cr{O}_3$ is a/an:

1. Acidic oxide
2. Basic oxide
3. Neutral oxide
4. Amphoteric oxide

Q. Which of the following statement is incorrect according to crystal field theory?

1. The $N{i}^{2+}\left(aq\right)$ cation is coloured because $N{i}^{2+}$ ion can absorb light, which promotes electrons from the low energy d-orbitals to high energy d-orbitals.
2. The $Z{n}^{2+}\left(aq\right)$ cation is colourless because the d-orbitals are completely filled and no electrons can be promoted, so on light is absorbed.
3. A complex which has just one absorption band at $455nm$, must be blue coloured.
4. A complex which has just one absorption band at $425nm$, must be yellow coloured.

Q. Chemical formula for calcium pyrophosphate is $C{a}_2{P}_2{O}_7$. The formula for ferric pyrophosphate will be

1. 
2. 
3. 
4. 

Q.

Is Copper Glance An Oxide Ore?

1. True
2. False